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Malicious code in fastify-bundler (npm)

0
Critical
Published: 07/14/2026 (07/14/2026, 02:41:15 UTC)
Source: GCVE Database
Product: fastify-bundler

Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (b3d824f75a77642b33c2c29524f9decca40c16a12aabe0a2528f3d90deac8720) The package's exported getPlugin function fetches JSON from https://svganchordev.net/icons/105 and passes the response's data.credits field to new Function() with require, module, process, Buffer, and other Node globals bound, then invokes it. Any consumer that imports fastify-bundler and calls the advertised API executes attacker-supplied JavaScript with full Node privileges; the remote operator can change the payload at any time. The package's declared dependencies (@primno/dpapi for Windows DPAPI credential decryption, better-sqlite3/sqlite3 for Chromium Login Data and Cookies stores, node-machine-id for host fingerprinting, socket.io-client, axios, request) are injected into the require() available to the remote payload, providing a ready-made toolkit for browser-credential theft and C2. The package identity is also deceptive: it is published as 'fastify-bundler' with a description claiming to be a 'high-performance web framework for Node.js', while the shipped README is titled 'Tailwindcss Forms Bundler' and instructs users to `npm install tailwindcss-forms-bundle' — a name/README mismatch targeting three unrelated popular ecosystems to attract installs. ## Source: ghsa-malware (4598c4d755d8e4c070b9218010d931db827742bfae319600afd609c186bcd446) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Affected software

npmghsa
fastify-bundler
Affected versions
=1.4.13

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/23/2026, 00:13:07 UTC

Technical Analysis

The fastify-bundler package (version 1.4.13) exports a getPlugin function that fetches JSON data from a remote URL and executes the data.credits field as JavaScript code with Node.js globals and require() bound, allowing arbitrary remote code execution. The package includes dependencies that enable Windows DPAPI credential decryption, access to Chromium browser login data and cookies, host fingerprinting, and network communication, effectively providing a toolkit for credential theft and command-and-control. The package identity is deceptive, with mismatched descriptions and README content to attract installs from multiple popular ecosystems. This results in full system compromise upon installation and use.

Potential Impact

Systems with fastify-bundler version 1.4.13 installed or running are fully compromised, as the package executes attacker-controlled code with full Node.js privileges. This can lead to theft of stored secrets, credentials, and keys, as well as persistent remote control of the affected system. Removal of the package does not guarantee elimination of all malicious artifacts or backdoors.

Mitigation Recommendations

Immediate removal of the fastify-bundler package version 1.4.13 is required. All secrets, keys, and credentials stored on the affected system should be rotated from a separate, trusted environment. Due to the high likelihood of full system compromise, a thorough incident response investigation and system rebuild are recommended. No official patch or fix is available; users must avoid this package and verify dependencies to prevent installation.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-10520
Osv Schema Version
1.7.4
Aliases
[]
Ecosystems
["npm"]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a55ff7768715ace432f263e

Added to database: 07/14/2026, 09:20:55 UTC

Last enriched: 07/23/2026, 00:13:07 UTC

Last updated: 07/24/2026, 20:26:16 UTC

Views: 18

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